Advertising device.



Wham w. HEISTERMAN. ADVERTISING DEVICE. J APPLIOATIOR FILED JUNE 1, 1909.

Patented Dec, 13,1910.

I xvw evxo' 00m W a I STATE-s PATENT oFr oE. A

vWILLIAMimis'rnmimn, 01' LONDON, :sNGL'ANn;

' ADVERTISING: DEVICE.

- To all whom it may concern: 7

Be it known that I, WILLIAM HEIsTERMAN,

, a subject of the Kingdom of Great Britain London, En

and resident of-London, in the county 0 land, have invented a certain new and use ul Improvement inAdvertisin clear,

,Devices, of which the following is a ful and .exact description; reference being made to the accompanying drawings, which 10- form apart of my specification.

My invention relates toadvertising devices such as tablets, posters, show cards and the like, and its object is to produce articles of this kind which will display certain an; nouncements, designs, devices or pictures, or a'combination of any or all of them in such a manner that they or artificial reflected light, but disa pear by transmitted light and their places e taken rbyother announcements, designs, devices or pictures or a combination of any or all of them, which are only visible by thetransmitted light. 7

In carrying out my invention, I a suitable paper,'linen or other disp ay surface of such a nature that without being transparent, it will permit rays of light to pass through it, in other words the display surface is translucent. On the front,-or positiveyside of this display surface I paint, print or otherwise depict so. much of the announcement or the-like, as is to be viewed by reflected light, and onthe back of the display surface I paint, "rintor otherwise depict a repetition of w atis on the front in such manner that the matter on the front 1provide will disappear when the surface is illumi natedfrom the back, and on the back I. also depict, in a reverse or negative manner, the matter which it' is desired to dis lay in substitution for what has been ren cred invisible, or more or less so, by the transmitted rays. 1

In the. drawings, Figure 1' shows a portion of the front of a display surface prepared in accordance with myinvention and Figs. 2 and-3 views'. of the same portion seen from behind and Fig. 4 a view seen vfrom',, the front when illuminated from behind.

I epict in trans arent color, blue, for example, the letters a on a white ground, bgon the display surface, a, made of suitable material which reflected light.

surface. With the front will be visible by naturalters Patent is Patented Dec. 213, 1910.

pass through it, linen or The. letters a will there ore be visible by At the back I depict the letters uncolored on a blueground as shown'at .03 and e Fig.2, the letters on the back being of course reversed, and'in-exact re 'ster with thoseon 'the'front of the'dispIiay and back-lettering thus depicted it will be 1 obvious that although the letters on the front'will be visible by reflected light they when seen by transmitted l1 ht owing to the blue letters in 'front comin glirectly over'the uncolored ones behind, ant? the white ground in front coming directly over the blue ground at the back. such as is shown for example at f in Fig. 3,- be depicted in the reverse direction at the back'of the display surface it will be invisible by reflected light and become visible by transmitted light simultaneously with the. 75

disappearance of the letters on the front, the result being as shown at Fig. 4 when illuminated from-behind.

- The letters, designs, pictures or devices maybe in lines or dots or solid, or in combinatipn of any or all of them, and they may will allow light to pa er, for instance. a

If then,;any other lettering,

will disappear I be in any colors or'combination of colors and certain parts may be transparent or translucent or more or less so, as may be desired. The dis lay surface may be framed or not, andmay orm the front of a chamber which contains the means for illuminating the design 'by transmitted light. Y

The invention can be used in combination with a flasher for electric light, or a mechanical devicefor operating tlre'source of illumination. 3 'Althoughl haye given an example of how my invention can-be carried mto effect, nevertheless I do not confine myself to such an application, as it can be; otherwise applied, as for instance in exhibiting a face of sad impression by reflected lightaud a smiling;

one by transmitted light.

Having thus described my invention what 1 0 I desire to claim as new and to cover by Let An advertising device comprising a'sheet of fabric which. is translucent, the same "having on its front side designs thlike made in colors which are transparent and on its rear" side a reproduction of the designs and the like on the front side in. reverse or negative manner, the designs and the like 5 uncolored on a ground which is a reproduction of the color of the design and the like on the front side, and in addition on the rear side designs and the like in reverse or ne%ative manner-in opaque colors, substantia 1y as 'and for the purpose described. Y WILLIAM HEISTERMAN. I Witnesses:

' H. D. JAMESON, I TH. RAND.- 

